Improvement in steam vacuum-pumps



C. H. HALL. Improvement nt cuum-Pumps. Patented Sep.24, 1872.

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UNITED. STATES PATENT OFFICE.

ennemis n, HALL, or NEW YORK, N'. r.

IMPROVEMENT IN STEAM VACUUMPUMPS.

CASE W.

To all whom it may concern:

Be it known that I, CHARLES H. HALL, of New York city, in the State of N ew York, have invented a certain Improvement in Steam Pumping Apparatus, of which the following is a specication:

To distinguishthis from other inventions of my own, which are somewhat analogous, I will designate this particular invention by the letter W.

In this construction three chambers are employed instead of one or two,l and the three serve intermittently, the discharge of water from each chamber affording the means at the proper time of initiating the commencement of the discharge of the water from its neighboron one side. Thus the empt-ying proceeds around in succession.

The following is a description of what I consider the best means of carrying out the invention. The accompanying drawing forms a part of this specitication.

Figure l is a side elevation partlyin section, and Fig. 2 a plan view.

Similar letters of reference indicate like parts in both iigures.

The arrangement of the chambers and the construction and arrangement of the valves for receiving and delivering the water are very plainly indicated in the drawing. S0 also are the several steam-valves and the controlling mechanism connected with each. The three steam-valves are indicated, respectively, el e2 e3. The pipes through which the expansion by heat is made to act on the liberating devices il i2 i3 are connected as follows: The pipe which serves as a medium for liberating y and permitting the opening of the valve e1 is marked k1, and leads to the chamber A3. The pipe which performs a corresponding service for the valve ci is marked k, and leads to the chamber A1; and the pipe which performs of steam is slight when worked in this manner in uncoated vessels of metal; but I propose in ordina-ry practice to coat the interior ofeach chamber with japan varnish, or with red lead and oil, or with a solution of rubber or the like to serve as a durable nonconductor of heat. I can make the chambers and the several connections of lead, to pump acids, or of glass or other material for any special uses requiring such.

What I claim as my invention is as follows:

, 1. The within-described series of three or more chambers, each having suitable water induction and eduction means, with provisions for admitting steam intermittently into each in succession, as specified.

2. Also, the specific arrangement of the pipes k1 k2 k3 and valve-liberating mechanism relatively to the chambers A1 A2 A3 withA their several water and steam valves and pipes, as herein specified.

In testimony whereof I have hereunto set my hand this 18th day of May, 1872, in the presence of two subscribing witnesses.

. C. H. HALL.

Witnesses:

ARNOLD HRMANN, W. O. DEY. 

